Review of the Application Status of Fluorescence Tracer Method in the Study of Asphalt Materials
Fluorescent tracer has been widely used in the study of asphalt materials because it can label bitumen with fluorescent tracers and help researchers to observe the microstructure of bitumen more visually.Firstly,the charac-teristics of the four types of tracers that are widely used and the main application fields were introduced;Then,the principle of fluorescence tracer and the fluorescent tracer commonly used in the study of asphalt materials were key overviewed.The current preparing methods of asphalt fluorescence microscopic samples were summarized to analyze the advantages and disadvantages of various methods;Finally,the application of fluorescence tracer method in the fields of fusion between virgin and aged asphalt,asphalt modification mechanism was reviewed,and the new fluo-rescent tracer was proposed.The results propose a new research idea for the fluorescence tracer method in the field of accurate quantitative analysis of the microscopic properties of asphalt.
fluorescence tracer methodfluorescent tracersfluorescence imagespreparation processapplication status
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